{
  "cveId": "CVE-2026-89455",
  "url": "https://patchblox.com/security/cve/CVE-2026-89455",
  "summary": "CVE-2026-89455 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89455, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  PCI: plda: Fix use-after-free of event IRQs duri...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  PCI: plda: Fix use-after-free of event IRQs during teardown  plda_pcie_irq_domain_deinit() removes pcie-\u003Eevent_domain via irq_domain_remove(), but the per-event IRQs mapped from that domain are requested with devm_request_irq() in plda_init_interrupts(). The actual free_irq() for a devm-managed IRQ is deferred by devres until after the calling probe()/remove() function returns.  This means irq_domain_remove() can free the domain\u0027s internal data before the deferred free_irq() for IRQs still mapped into it has run. When devres later processes that deferred cleanup, it can end up dereferencing the already-freed domain.  Free each event IRQ explicitly with devm_free_irq() before removing the domain. This triggers the free immediately and removes the IRQ from the devres tracking list, so devres will not attempt to free it a second time later.  Also dispose of the event, INTx, and MSI IRQ mappings with irq_dispose_mapping() before their owning domains are removed.  Finally, guard the calls to irq_set_chained_handler_and_data() for pcie-\u003Eirq, pcie-\u003Emsi_irq, and pcie-\u003Eintx_irq so they only run when those fields hold a valid (\u003E0) IRQ number.  This is a pre-existing issue, flagged by automated review during work on an earlier, unrelated patch to this driver.  Build-tested and boot-tested on StarFive VisionFive v1.2A board",
  "published": "2026-09-11T20:19:26Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10633,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-89455",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89455",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89455",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89455",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-89455",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89455",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}